When heated, potassium chlorate produces oxygen gas \& potassium chloride, according to the reaction below. If 22.9 grams of potassium chlorate reacts and 4.39 L of oxygen at STP is collected, what is the percent yield for the reaction? \( 2 \mathrm{KClO}_{3} \rightarrow 2 \mathrm{KCl}+3 \mathrm{O}_{2} \)

Which is the correct Lewis structure for acetylene (\(C_ { 2} H_ { 2} \))?

57. Rappresenta le equazioni delle seguenti reazioni specificando il nome dei prodotti. \( \begin{array}{ll}\text { a) ossidazione dell'esano } & \text { c) dibromurazione dell'esano } \\ \text { b) monoclorurazione del butano } & \text { d) ossidazione del propano }\end{array} \)

During a reaction, the enthalpy of formation of an intermediate is -286 \( \mathrm{~kJ} / \mathrm{mol} \). During the reaction, 2 moles of the intermediate are produced. What is the enthalpy value for this step of the reaction? A. -572 kJ B. 572 kJ C. 286 kJ D. -286 kJ

What does word root indicate in IUPAC name? b. Write the suffix for doubly bonded \( (\mathrm{C}=\mathrm{C}) \) alcohol. c. Ifsame substituent is repeated thrice, which prefix is added to word root? \& Write IUPAC name of \( \mathrm{CH}_{3}-\mathrm{CH}(\mathrm{CI})-\mathrm{CH}_{2}-\mathrm{COOH} \). e. Which group is selected as suffix if -OH and -CHO both are present in the compound?

The electronic configuration of one element is \(1s^ 2 2s^ 2 2p^ 6 3s^ 2 3p^ 6 3d^ { 10} 4s^ 1\). What is same group which is recently discovered?